1 files changed, 103 insertions, 0 deletions
diff --git a/libX11/src/DrLine.c b/libX11/src/DrLine.c
new file mode 100644
index 000000000..9c5275b0c
--- /dev/null
+++ b/libX11/src/DrLine.c
@@ -0,0 +1,103 @@
+/* $Xorg: DrLine.c,v 1.4 2001/02/09 02:03:32 xorgcvs Exp $ */
+/*
+
+Copyright 1986, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+/* $XFree86: xc/lib/X11/DrLine.c,v 1.3 2001/01/17 19:41:34 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+
+/* precompute the maximum size of batching request allowed */
+
+#define wsize (SIZEOF(xPolySegmentReq) + WLNSPERBATCH * SIZEOF(xSegment))
+#define zsize (SIZEOF(xPolySegmentReq) + ZLNSPERBATCH * SIZEOF(xSegment))
+
+int
+XDrawLine (
+    register Display *dpy,
+    Drawable d,
+    GC gc,
+    int x1,
+    int y1, 
+    int x2, 
+    int y2)
+{
+    register xSegment *segment;
+#ifdef MUSTCOPY
+    xSegment segmentdata;
+    long len = SIZEOF(xSegment);
+
+    segment = &segmentdata;
+#endif /* not MUSTCOPY */
+
+    LockDisplay(dpy);
+    FlushGC(dpy, gc);
+
+    {
+    register xPolySegmentReq *req = (xPolySegmentReq *) dpy->last_req;
+
+    /* if same as previous request, with same drawable, batch requests */
+    if (
+          (req->reqType == X_PolySegment)
+       && (req->drawable == d)
+       && (req->gc == gc->gid)
+       && ((dpy->bufptr + SIZEOF(xSegment)) <= dpy->bufmax)
+       && (((char *)dpy->bufptr - (char *)req) < (gc->values.line_width ?
+						  wsize : zsize)) ) {
+	 req->length += SIZEOF(xSegment) >> 2;
+#ifndef MUSTCOPY
+         segment = (xSegment *) dpy->bufptr;
+	 dpy->bufptr += SIZEOF(xSegment);
+#endif /* not MUSTCOPY */
+	 }
+
+    else {
+	GetReqExtra (PolySegment, SIZEOF(xSegment), req);
+	req->drawable = d;
+	req->gc = gc->gid;
+#ifdef MUSTCOPY
+	dpy->bufptr -= SIZEOF(xSegment);
+#else
+	segment = (xSegment *) NEXTPTR(req,xPolySegmentReq);
+#endif /* MUSTCOPY */
+	}
+
+    segment->x1 = x1;
+    segment->y1 = y1;
+    segment->x2 = x2;
+    segment->y2 = y2;
+
+#ifdef MUSTCOPY
+    Data (dpy, (char *) &segmentdata, len);
+#endif /* MUSTCOPY */
+
+    UnlockDisplay(dpy);
+    SyncHandle();
+    }
+    return 1;
+}
+